Giraffes with a longer neck variations would be more likely to survive than shorter-necked giraffes in which of these situations?
a)loggers come in a chop down all of the trees
b)insects can only eat the highest leaves due to the canopy
c)a plant disease infects the trees, resulting in total leaf death.
d)monkeys swarm in and tear off all of the lower leaves to use for shelters

Which organelles are involved in energy conversion

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

What noticeable trend from this graph might be used to make a conclusion?